Anteflexion
goi
The prefix "pro-" means in favor of, supporting, before, or forward.
Add prefix to edible
Where the prefix retro- does not merely "reverse" the existing condition (which would already be the opposite e.g. retro-rocket), the opposite would be pro- (proactive, progressive, prograde, and prospective).
Yes, these are called "prefix-bound" or "suffix-bound" words. They are words that alter their pronunciation when combined with a prefix or suffix.
goi
Procrastinate does have a prefix. It is pro-. Pro- means forward. So the meaning of procrastinate is to not move forward.
The prefix "pro-" means in favor of, supporting, before, or forward.
The prefix is de-.
Add prefix to edible
forward
No, Profit is not a prefix. Also the prefix pro- means forward, not before like pre-.
The prefix is pro-. This prefix means for or forward.
proceed
In some words it means "forward" or "forth."
forward
Yes; it's pro-, meaning "forward". "Profit" is from the Latin noun profectus (-us, m.), "advance, progress, profit", which in turn is from pro- "forward" and facere, "to do, to make". The same prefix is seen in "progress", from Latin progredi, "to go forward."